Does Median Width Matter?

• Authored by:  Stuart Samberg
• Event:  2012 National Conference on Access Management

Outline

• Application of Differing Widths
• Standards Summary
• Geometric Impacts of Widths
• Previous Safety Research
• Highway Safety Manual Results
• Applications of Existing CMFs
• Future Research
• Conclusions
   

Future Research

• Before and After Study with Differing Widths
• Statewide Data Review to update 1993 FHWA Report
• Trends in Median Width Treatments

Conclusions

• Median Installation Reduces Crashes
• Reduced Crashes with Wider Medians
• Balancing Capacity, Geometry and Safety
• More Research Needed
  • Before and After Project Studies
  • Statewide Data Reviews